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You are the network consultant from passguide.com. You have been asked for which two features of optical networks allow data to be transmitted over extremely long distances? （）
- A、Encryption
- B、Bandwidth limits
- C、Minimal signal loss
- D、No EMI
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单选题You are the network consultant from passguide.com. Could you please tell customers what strategy will protect network resources and services from unauthorized actions?（）A
Network managementB
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单选题You are the network administrator at TestKing. TestKing has been assigned the class C IP address 189.66.1.0 by its Internet Service Provider. If you divide the network range by using the 255.255.255.224 subnet mask, how many hosts can be supported on each network?（）A
14B
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Easy VPNB
IPsec GRE tunnelingC
Virtual Tunnel InterfacesD
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full meshB
peer-to-peerC
partial meshD
hub and spoke
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多选题You are the network consultant from passguide.com. You have been asked for which two features of optical networks allow data to be transmitted over extremely long distances? （）AEncryptionBBandwidth limitsCMinimal signal lossDNo EMI
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